CN108770107A - A kind of microwave device for columnar object heating - Google Patents
A kind of microwave device for columnar object heating Download PDFInfo
- Publication number
- CN108770107A CN108770107A CN201810873254.2A CN201810873254A CN108770107A CN 108770107 A CN108770107 A CN 108770107A CN 201810873254 A CN201810873254 A CN 201810873254A CN 108770107 A CN108770107 A CN 108770107A
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- China
- Prior art keywords
- printed antenna
- heated material
- pedestal
- microwave
- column heated
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
Abstract
The invention discloses a kind of microwave devices for columnar object heating.Including pin type printed antenna, coaxial feed, pedestal, pedestal firmware, shielding cavity.Pin type printed antenna can be fixed on the base by pedestal and fixing piece, pin type printed antenna is heated by being inserted into cylindrical objects center to be heated simultaneously, reduce the leakage of electromagnetic wave by metallic enclosure, and the through-hole on shielding cavity be used for being heated after temperature detection and smell release.The present invention is the application of microwave heating in the industry, and advantage makes with the good effect such as high conversion efficiency, homogeneous heating, portable, safe.
Description
Technical field
The invention belongs to Pulse width fields, are related to a kind of microwave device for columnar object heating.
Background technology
Microwave heating is a kind of application relatively conventional in Pulse width field, due to it with the high efficiency of heating surface and
The features such as high uniformity, obtains more application in food heating, medicinal material drying, tealeaves stir-frying, road surface deicing etc..Only
In such applications, microwave energy is more to be radiated open sky by large-size antennaes such as waveguide trumpet, metal dipoles
Between either in larger closed metal container.When required antenna size and confined space are contracted to a microwave operational wave
When within length, serious mismatch, which can occur, for antenna causes energy can not be in Net long wave radiation to closed chamber.How for special to be added
Hot object develops a kind of microwave heating equipment of compact type, it is ensured that microwave energy can be arrived by corresponding aerial radiation
In the relatively narrow metal enclosed space of size, with a big difficulty studied as microwave heating.
Invention content
The purpose of the present invention is to provide a kind of microwave devices for columnar object heating, are realizing that microwave energy is higher
While utilization, the uniformity of its heating effect is realized;And background, customization it can design entire microwave according to different needs and add
The size of thermal realizes the miniaturization of heating device and cost effective.
To achieve the above object, the technical solution adopted by the present invention is that:A kind of microwave device for columnar object heating,
Including pin type printed antenna, coaxial feed, pedestal, base fixture, shielding cavity;The pin type printed antenna is fixed on pedestal
On, and microwave feed is carried out by coaxial feed, and it is inserted into the center of columnar object;The base fixture prints pin type
Antenna, pedestal are fixed in base fixture;The shielding cavity is covered on by pin type printed antenna, pedestal, fixing piece and column
In the module of shape object composition.
Further, the pin type printed antenna is made of N (N >=3) the GeUXing branches being printed on on substrate, often
The width of the line of Liang Ge branches and mutual spacing are determined by the type and diameter of columnar object;The U-shaped branch of each two
The length of line is determined by the length and type of columnar object to be heated;Be splitter formula at the top of pin type printed antenna, facilitate by
Pin type printed antenna is inserted into the center of columnar object;Be provided with through-hole on the pedestal of pin type printed antenna, for screw by its
It is fixed on the base.
Further, the pedestal includes movable block, threaded hole and screw, and movable block can be inserted by screw
Enter threaded hole and fixes pin type printed antenna on pedestal.
Further, venthole, two grooves and screw are provided on the shielding cavity, screw will by groove
Shielding cavity is fixed together with remaining part.
Further, coaxial feed can be inserted into threaded hole by screw and is fixed on the base, and be printed with pin type
The feed section of antenna is in electrical contact.
Compared with prior art, the present invention having the following advantages and beneficial effect:
(1) it may be implemented to be evenly heated cylindricality heated material.
(2) miniaturization and the portability of entire heating device may be implemented.
(3) safety of heating device can be ensured.
The purpose of the present invention, feature and advantage will make explanation further below with reference to attached drawing in conjunction with the embodiments.
Description of the drawings
Fig. 1 is the overall schematic of the present invention
Fig. 2 is the planar printed antenna structural schematic diagram designed by the present invention.
Fig. 3 is reflectance factor S11 curve of the pin type printed antenna in 2.40GHz-2.50GHz.
Specific implementation mode
As shown in the overall structure expanded schematic diagram of Fig. 1, a kind of microwave device for columnar object heating includes pin type
Printed antenna 1, coaxial feed 2, pedestal 3, base fixture 4, shielding cavity 5.It is characterized in that:Pin type printed antenna 1 is fixed on
It on pedestal 3, and is fed by coaxial feed 2, pin type printed antenna 1, pedestal 3 are fixed on pedestal and fixed by base fixture 4
In part 4, cylindrical objects 6 to be heated are fixed along the splitter end of pin type printed antenna by inserting down, shielding cavity 5 is covered on by pin type
In the module that printed antenna 1, pedestal 3, fixing piece 4 and cylindrical objects 6 form.
Further, pin type printed antenna 1 is made of N (N >=3) GeUXing branches, the width of the line of each two branch and
Mutual spacing is determined by the type of substance to be heated;The length of the U-shaped branch line of each two is by cylindrical objects 6 to be heated
Length determines;It is provided with threaded hole 11 on the pedestal of pin type printed antenna 1, is used for the fixation of screw 32.
Further, the pedestal 3 includes movable block 33, threaded hole 31 and screw 32, and movable block 33 can lead to
It crosses the insertion threaded hole 31 of screw 34 to fix slotting pin type printed antenna 1 on the base 3, facilitates coaxial feed 2 to pin type
Printed antenna carries out stablizing feed.
Further, 54, two grooves 53 of venthole and screw 52, screw 52 are provided on the shielding cavity 5
Shielding cavity 5 is fixed together with remaining part by groove 53, on the one hand, by the pin type printed antenna 1 and pillars of heating
The cover of body 6 gets up, and prevents the leakage of electromagnetic wave, and on the other hand, trepanning on shielding cavity realizes the real time monitoring to heating temperature, also
It can be used as ventilation hole, be conducive to smell etc. and shed.
Further, the coaxial feed 2 can be inserted into threaded hole 31 by screw 32 and be fixed on the base 3,
And contacted with the feed section of pin type printed antenna 1, for feeding, and the size of feed-in microwave power, it can be according to actually required
Heating effect set.
In order to further illustrate the exploitativeness of said program, a specific design example is given below.One kind is used for
The microwave device of columnar object heating, the pin type printed antenna of design are operated in 2.4GHz~2.5GHz.The dielectric substrate used
Thickness be 0.508mm, dielectric constant be 3.66 Rogers 5880.Entirely the size of substrate is:14mm*6mm*
0.508mm, the chamfering length wherein at splitter are 3mm;The number of printed antenna on substrate, U-shaped metal band is 4, each U
The line width of type metal band is 0.4mm, and the gap inside each U-shaped metal band is respectively 0.4mm, two neighboring metal strip
Spacing between band is 0.4mm, 0.3mm, 0.4mm;A diameter of 8mm of metallic enclosure is highly 27mm, divulges information on side wall
A diameter of 1.4mm in hole, a diameter of 7mm of columnar object, relative dielectric constant 1.9, loss angle tangent 0.07.Entire
S11 in working frequency range 2.4GHz~2.45GHz is respectively less than -10dB.Those of ordinary skill in the art will understand that here
The embodiment described is to help reader and understands the principle of the present invention, it should be understood that protection scope of the present invention is not limited to
In such specific embodiments and embodiments.Those skilled in the art can be according to the technical disclosures disclosed by the invention
Various various other specific variations and combinations for not departing from the present invention are made, these variations and combinations are still in the protection of the present invention
In range.
Claims (3)
1. a kind of microwave device for columnar object heating, including planar printed antenna (1), coaxial feed (2), metab
(3), base fixture (4), metallic enclosure (5), column heated material (6);It is characterized in that:The planographic day
Line (1) is fixed on metab (3), and carries out microwave feed by coaxial feed (2), and from bottom to top is inserted into column and is waited for
It is internal to heat object (6);;The metab (3) is fixed in base fixture (4), it is ensured that metab (3) and plane
When column heated material (6) are inserted into double swerve does not occur for printed antenna (1);The metallic enclosure (5) covers flat
Face printed antenna (1) and column heated material (6), and it is close to form with pedestal (3) and base fixture (4) electromagnetism together
Closed chamber, it is ensured that the microwave radiated by planar printed antenna (1) will not be leaked to outside electromagnetism closed chamber.
2. a kind of microwave device for columnar object heating according to claim 1, it is characterised in that:Planographic day
Line (1) is by a U-shaped branch lines (13) of the N (N >=2) being printed on high temperature resistant substrate (12) and class coplanar wave guide feedback line segment
(14) form, the width of each U-shaped branch line (13) and mutual spacing by column heated material equivalent electromagnetism
Parameter and sectional area determine;The length of each U-shaped branch line (13) is slightly less than the length of column heated material (6);Plane
Splitter formula is processed at the top of printed antenna (1), it is convenient from bottom to top to be rapidly inserted into column heated material (6) inside;Institute
The class coplanar wave guide feedback line segment (14) stated includes that middle part is connected directly with U-shaped branch line one of in N number of U-shaped branch line
Straight micro-strip line segment (15) and positioned at straight micro-strip line segment (15) both sides ground plane (16);Adjust straight micro-strip line segment (15) and
The gap spacing of ground plane (16) changes the characteristic impedance of class coplanar wave guide feedback line segment (14), and then realizes that microwave is effectively presented
Enter onto planar printed antenna (1).
3. the microwave device according to claim 1 for columnar object heating, it is characterised in that:The shielding cavity
(5) side wall is provided with M (M >=2) detection through-hole (51) for the temperature of column heated material, the real-time prison of humidity parameter
Control;The exhaust that netted venthole facilitates column heated material is provided with above shielding cavity (5);Shielding cavity is opened below (5)
There are two grooves (53);Screw (52) by being inserted into groove (53) fixes shielding cavity (5) and pedestal (3) and pedestal
Part (4) is tightly secured together.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201810873254.2A CN108770107B (en) | 2018-08-02 | 2018-08-02 | Microwave device for heating columnar object |
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CN201810873254.2A CN108770107B (en) | 2018-08-02 | 2018-08-02 | Microwave device for heating columnar object |
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CN108770107A true CN108770107A (en) | 2018-11-06 |
CN108770107B CN108770107B (en) | 2024-04-19 |
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CN201810873254.2A Active CN108770107B (en) | 2018-08-02 | 2018-08-02 | Microwave device for heating columnar object |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109496005A (en) * | 2018-11-23 | 2019-03-19 | 电子科技大学 | A kind of microwave heating equipment based on multi-frequency multi-mode antenna loading |
CN110662322A (en) * | 2019-09-02 | 2020-01-07 | 成都亚彦科技有限公司 | Microwave output control method and device, storage medium and terminal equipment |
CN112137167A (en) * | 2019-06-28 | 2020-12-29 | 北京航天雷特机电工程有限公司 | Microwave antenna and electronic cigarette |
CN113825271A (en) * | 2021-08-26 | 2021-12-21 | 电子科技大学长三角研究院(湖州) | Traditional chinese medicine heating box based on microwave heating |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109496005A (en) * | 2018-11-23 | 2019-03-19 | 电子科技大学 | A kind of microwave heating equipment based on multi-frequency multi-mode antenna loading |
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CN112137167A (en) * | 2019-06-28 | 2020-12-29 | 北京航天雷特机电工程有限公司 | Microwave antenna and electronic cigarette |
CN110662322A (en) * | 2019-09-02 | 2020-01-07 | 成都亚彦科技有限公司 | Microwave output control method and device, storage medium and terminal equipment |
CN110662322B (en) * | 2019-09-02 | 2022-11-15 | 成都亚彦科技有限公司 | Microwave output control method and device, storage medium and terminal equipment |
CN113825271A (en) * | 2021-08-26 | 2021-12-21 | 电子科技大学长三角研究院(湖州) | Traditional chinese medicine heating box based on microwave heating |
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